High-duty-valve structure



G. ERICSSON v HIGH DUTY VALVE STRUCTURE Feb. 7, 1928. 1,658,374

Filedl April 25. 19.27

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PatentedFeb. 7, 1928.

UNITED STATES PATENT. loi-friser..g

GU'NNAR. EnIcssoN, or PHILADELPHIA, PENNSYLVANIA."

HIGHLDUTY-VALVE STRUCTURE.

AApplication led April 23, 1927.V Serial No. 186,017.

preventing leakage. The object ofniy in-` vention is to yprevent this leakage and this object is accomplished by the two dilerent means herein shown and described, which are included in one patent because they have inventive features in common; the invention .being capable of still other modifications within the scope ot the claims.

Intlie drawings:

Fig. 'l is an elevational section through kthe valve structure. Y* 4 Fig. 1A is an enlarged vertical section through one walloil the' valve casing and one ot the valve seats.

Fig. 2 is a view7 similar vto Fig. 1A, of a. inodilication.- Y Y First describing the construction of Figs. 1 and 1A: the valve casing c is provided on opposite sides with aligning circular openings within which are secured the annular valve seats m, m, which project within and with- The ends of the valve seats projecting outside the casing arethreaded to receive rings Y), o, which function as nuts to hold the valve seats in position and which are internally threaded to engage the ends ot the tluid carrying pipes a, a.

Surinounting the valve casing and bolted thereto is a cover (L Surmounting the cover and bolted thereto is a cap e.

The valve 7c, which is of the gate type, is

disc-shaped and is tapered toward its lower end to have a. wedgedike engagement with the correspondingly inclined oppositely facing walls ot' the valve seats. The valve is threaded on a rod 71 whichv extends up `through the cover d and cap c. The rod also extends through a packing g within cap e andthrough a gland 7", which is bolted to cover d byy bolts (not shown). At the top, rod 7L is provided with a hand wheel 71.', by means ot which the rod may be turned in one direction or the other to seat or unseat the valve lc on its seats m.

That part of the aboveV construction coinprising t-he connection between the valve ceive a' weld v.

casingl and cover and the connectionsbetween the cover and the cap and gland embodies features vwhich form the subject-metterci another application lor `pat-ent, Serial No. 186,016, filed of evendate herewith,kr and although 'not herein claimed, is not hereby dedicated to the public.

. yTo render fluid-tight the'joints between the casing ,c and the valve seats mand betweenthe valve seats m and the ribs b, the following construction is provided.k

The inner end of each valve seat m is prov vided with anoutwardly extending annular flange u. In Figure. 1the outer -face of this flange is stepped to form two:concentric shoulders. The valve casing, at the inner edge of eachopening that receives va valve seat, isk recessed circumferentially to receive that one ofthe shoulders which adjoins the body yof the valve seat, as more clearly shown in Fig. 15, Aandbetween vthis shoulder and the recess -a gasket o is confined.

T he valve casing, at the outer edge of each opening that receives a valve seat, is recessed.v circumterentially.. The inner end of the corresponding ring b is provided with an annular projection p that extends into said re cess and contines therein a gasket g.

The kinner end of each ring b, around its outer edge, is bevelledand the 'circumiere ential space between this end ofthe ring and the opposingface of the valve casing receives a Weld 1'.

The outer end of each ring may be cir-y cumferentially recessed kalong its inner edge to receive a weld s.

The `above construction guards against leakage from within the valve casing and Vfrom `within the conduit outside the valves.

The construction shown in Fig. 2 differs from that shown in Figs. 1 and 1A in that the valve seats, marked t, are interiorly threadedv to receiveV the pipes. The rings, marked u, are, like rings Z), bevelled around the outer edges of their The inner end oteach valve seat m is provided with an outwardly extending annular flange w, which extends within a circumferential recess in the valve casing and contines in said recess a gasket m. A weld y maybe applied at the joint between'the outer face of flange wand the inner fac-e of thevalve casing. The outer ends of'valve seats?? and rings u arefprovided with opposing bevels to form a groove toreceive a weld z.

ico y inner ends to rekgagi'ng such' recess, a Vrecess b vsaid flangeD the inner end oit' eacn Having 'now fully described'my invention, what l claim and desire to protect by Letters Patent is; l l v l. A valve ystructure comprising a valve casing having openings ingopposite sides, valve seats Within and extending through the casing openings, external rings 4sleeved en the ends of the valve seats projecting outside thecasing, the valvek casing having` a circumferential'recess at Vthe inner edge of caclropeningya flange on the valve seat engaging such recess, a gasket confined in said recessloy said lange,-and circumferential iveldsatihe joints-between the outer Walls of the casing and the innerends ot the rings A valve structure comprising a valve casing*- having a openings in opposite. sides7 valve seats Within and extending through the casing.r openings, yexternal rings sleeved on the ends ofthe valve seats proiecting out- J side the casingj the valve casing' aving a Acirclini'lv'erential'recess at-tlie inner-edge of each opening, a liange on the valveseat engasket conlinedtin said ring having` a circumferential bevel at its outer edgei and a Weld between said bevel casing having openings Vin .opposite i sides, valve seats Within and extending through the casing openings, external rings sleeved on the endsl of the valve seats projecting outside thezlcasing, the valve casing having a circumferential recess at the inner edge of Veach openingpa iiange on the valve seat engaging such recessa the outwardly facing side of said .flange being stepped to iorn'i outwardly facing concentric shoulde. one oi which extends inte said recess, and a gasket conlined in lsaid recess h v said shoulder.

A valve structure comprising a valvecasing having openings in epposite sides, valve seats Within and-extending: through said openings, external rings sleeved on `the ends of the valve seats'projccting outside. the casing? jthe valve casing having circumferential recesses at the innervand outerv edges of each opening, an annular i'lafngeon the valve seat engaging the inner of said re cesses. an annular projectiononthe inner end of the' ring engaging the outer of said recesses, and a gasketconiined in cach recess.y l p I l In testiinon7 ot Which inventionLI have hereunto set my hand, at Philadelphia, Pa., on this 13th day of April` 1927.

GUNNAR ERICSSON. 

